A 62 year-old Asian male with a 20 pack-year smoking history presented to his primary care physician with persistent cough for 6 weeks. The chest radiograph showed a right upper lobe mass confirmed by chest computed tomography. There was no mediastinal lymphadenopathy. His FEV1 was 36% of predicted. DLCO was 28% of predicted. Results from bronchoscopy with fluoroscopy-guided transbronchial lung biopsy showed poorly differentiated adenocarcinoma. Material was insufficient for molecular analysis due to the large number of immunostains performed in the pathology laboratory. The patient is discussed at your institution's multidisciplinary lung cancer conference.

Each fictitious clinical case scenario is based on a conglomerate of real patient data. Cases have been modified to avoid any possibility for patient identification and to help meet educational objectives. Any resemblance to real persons, living or deceased, is purely coincidental.

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The World Association for Bronchology and Interventional Pulmonology (WABIP) is a non-profit organization consisting of over 8,900 medical professionals representing over 50 regional and national societies.